Usage:
represent style atom-spec

Represent changes the draw modes of the specified atoms (and the bonds connecting them) according to style. Style can be:

• wire (wireframe representation; the default)
• stick (stick representation)
• bs or b+s (ball-and-stick representation)
• cpk or sphere (Corey-Pauling-Koltun or sphere representation)

See also: linewidth, resrepr, surface, the Actions menu